IAS General Studies Prelims Question No. 102
A rough sea can be calmed by pouring oil on its surface because __:
[A] The oil increases the surface tension of water
[B] The surface tension of the oil film absorbs energy of waves
[C] The winds creating waves are blocked by the oil film
[D] None of the reasons mentioned in A, B and C
When the waves go underneath the film, the surface tension of the oil film makes them to lose some of the energy.